This picture shows the "ramps to nowhere" and a small edge of the Washington Park Arboretum, designed in 1936. The unused ramps that are popular with summertime swimmers were meant to connect to an expressway to what's now Martin Luther King Junior Way South. But the project was officially scrapped in 1971. This picture taken in 2007 shows a message to Gina on one of the the unused overpasses. Though this image ran on the front of the print P-I and in several places online, the story behind Gina and the person who put the message there remains a mystery.

Photo: JOSHUA TRUJILLO, SEATTLEPI.COM FILE

This picture shows the "ramps to nowhere" and a small edge of the...

Alex Merrick takes a flying leap off a closed and unused section the 520 Bridge into the cool water of the Washington Park Arboretum below on Monday August 8, 2005 in Seattle. The unused ramp is a popular spot where Seattelites have plunged into the water below for many years.

Photo: JOSHUA TRUJILLO, SEATTLEPI.COM FILE

Alex Merrick takes a flying leap off a closed and unused section...

The Highway 520 Interchange near Husky Stadium in the Washington Park Arboretum photographed on Tuesday, June 12, 2007 in Seattle.

Photo: JOSHUA TRUJILLO, SEATTLEPI.COM FILE

The Highway 520 Interchange near Husky Stadium in the Washington...

Wendy Collins, center, leaps off an unused ramp on Highway 520 into the cool water of the Arboretum below on Tuesday July 28, 2009 during a heat wave in Seattle.